Almost 4 in 10 men with high-risk or locally advanced prostate cancer (prostate cancer that is likely to or that has already spread beyond the prostate) may be “undertreated” by the failure to use radiotherapy or in some circumstances surgery, according to new results. The most common form of under-treatment is the use of hormonal treatments alone without additional radiotherapy or surgery. This means that some of the men diagnosed with high-risk or locally advanced prostate cancer may not be receiving the best treatment.